RE: GHC 7.0.1 rc1: Could not deduce ( Typeable a) from the context (Typeable a, …)

2010-09-30 Thread Simon Peyton-Jones
| To: Simon Peyton-Jones | Cc: glasgow-haskell-users@haskell.org | Subject: Re: GHC 7.0.1 rc1: Could not deduce (Typeable a) from the context (Typeable | a, …) | | Simon Peyton-Jones wrote: | Oh dear, that really is quite a strange error message. Something is | definitely wrong. Can you please

RE: GHC 7.0.1 rc1: Could not deduce ( Typeable a) from the context (Typeable a, …)

2010-09-29 Thread Simon Peyton-Jones
Oh dear, that really is quite a strange error message. Something is definitely wrong. Can you please make a ticket for it, and include instructions on how to reproduce it?I gather that it depends on other packages that themselves needed changes, so reproduction might not be entirely easy?